Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail)

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Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Earnings Per Share [Abstract]        
Weighted average shares used in basic computations 102,200 108,816 103,096 113,838
Dilutive effect of exercise of equity grants outstanding 5,577 4,830 4,663 5,485
Dilutive effect of warrants       53
Weighted average shares used in diluted computations 107,777 113,646 107,759 119,376